Question

9. Add 2x + 5xy - 4y and x² – 2xy + y using horizontal as well as
column method.
10. If the angles (4x + 4)º and (6x- 4)° are supplementary angles, fl
the value of x.​

Answer 1

Step-by-step explanation:

10) (4x+4)+(6x-4)=180

10x=180

x=180/10

x=18

first angle=76(smaller)

second angle=104(larger)

Answer 2

Answer:

9) x^2+3xy-3y+2x

10) 1) 76^°2)104^°

Step-by-step explanation:

9) 2x+5xy-4y+x^2-2xy+y

= x^2+3xy-3y+2x

x^2-2xy+y

+5xy-4y+2x

______________

x^2+3xy-3y+2x

10) (4x+4)+(6x-4)=180

4x+4+6x-4=189

10x=180

X=180/10=18

4x+4 =4*18+4=72+4=76

6x-4=6*18-4=108-4=104